From 175bdda34701fb3ee9688b40a974a402975b910f Mon Sep 17 00:00:00 2001
From: Andy Nichols <andy.nichols@digia.com>
Date: Thu, 6 Mar 2014 12:33:41 +0100
Subject: CoreAudio: Set default audio category to Playback on iOS

This fixes the issue that when we use QSoundEffect we dont need to get
permission to use the microphone.  This was because we were defaulting
to PlayAndRecord.  Now we only switch to the PlayAndRecord category when
we try and use an input device.

[ChangeLog][QtMultimedia][iOS] Using QSoundEffect (or SoundEffect in
QML) no longer requires permission to use the microphone.

Change-Id: I94535215497a718005c280bfd84b428b4bf1b16a
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
---
 src/plugins/coreaudio/coreaudiodeviceinfo.mm     | 11 +++++++++++
 src/plugins/coreaudio/coreaudioinput.mm          |  4 ++++
 src/plugins/coreaudio/coreaudiosessionmanager.mm |  3 ++-
 3 files changed, 17 insertions(+), 1 deletion(-)

(limited to 'src/plugins/coreaudio')

diff --git a/src/plugins/coreaudio/coreaudiodeviceinfo.mm b/src/plugins/coreaudio/coreaudiodeviceinfo.mm
index bb1f046a6..74a692c10 100644
--- a/src/plugins/coreaudio/coreaudiodeviceinfo.mm
+++ b/src/plugins/coreaudio/coreaudiodeviceinfo.mm
@@ -61,6 +61,11 @@ CoreAudioDeviceInfo::CoreAudioDeviceInfo(const QByteArray &device, QAudio::Mode
     m_deviceId = AudioDeviceID(deviceID);
 #else //iOS
     m_device = device;
+    if (mode == QAudio::AudioInput) {
+        if (CoreAudioSessionManager::instance().category() != CoreAudioSessionManager::PlayAndRecord) {
+            CoreAudioSessionManager::instance().setCategory(CoreAudioSessionManager::PlayAndRecord);
+        }
+    }
 #endif
 }
 
@@ -379,6 +384,12 @@ QList<QByteArray> CoreAudioDeviceInfo::availableDevices(QAudio::Mode mode)
         }
     }
 #else //iOS
+    if (mode == QAudio::AudioInput) {
+        if (CoreAudioSessionManager::instance().category() != CoreAudioSessionManager::PlayAndRecord) {
+            CoreAudioSessionManager::instance().setCategory(CoreAudioSessionManager::PlayAndRecord);
+        }
+    }
+
     CoreAudioSessionManager::instance().setActive(true);
 
     if (mode == QAudio::AudioOutput)
diff --git a/src/plugins/coreaudio/coreaudioinput.mm b/src/plugins/coreaudio/coreaudioinput.mm
index c41e1a51e..a0b9e9d25 100644
--- a/src/plugins/coreaudio/coreaudioinput.mm
+++ b/src/plugins/coreaudio/coreaudioinput.mm
@@ -47,6 +47,10 @@
 # include <CoreServices/CoreServices.h>
 #endif
 
+#if defined(Q_OS_IOS)
+# include "coreaudiosessionmanager.h"
+#endif
+
 #include <QtMultimedia/private/qaudiohelpers_p.h>
 #include <QtCore/QDebug>
 
diff --git a/src/plugins/coreaudio/coreaudiosessionmanager.mm b/src/plugins/coreaudio/coreaudiosessionmanager.mm
index 4b3bdb7dc..0e795e786 100644
--- a/src/plugins/coreaudio/coreaudiosessionmanager.mm
+++ b/src/plugins/coreaudio/coreaudiosessionmanager.mm
@@ -216,7 +216,8 @@ CoreAudioSessionManager::CoreAudioSessionManager() :
 {
     m_sessionObserver = [[CoreAudioSessionObserver alloc] initWithAudioSessionManager:this];
     setActive(true);
-    setCategory(CoreAudioSessionManager::PlayAndRecord, CoreAudioSessionManager::MixWithOthers);
+    //set default category to just Playback and only switch if we need more permissions
+    setCategory(CoreAudioSessionManager::Playback, CoreAudioSessionManager::MixWithOthers);
 }
 
 CoreAudioSessionManager::~CoreAudioSessionManager()
-- 
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